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91612 (1999 TJ30)
Classification: Main-belt Asteroid          SPK-ID: 2091612
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1376082033309184 4.0323e-08  
a 3.053025792619472 2.5413e-08 au
q 2.632904398574154 1.2814e-07 au
i 8.475231839720669 6.3517e-06 deg
node 201.4554015074082 2.8206e-05 deg
peri 115.5350198597647 4.4161e-05 deg
M 358.384837991784 2.9125e-05 deg
tp 2459009.241938093600
(2020-Jun-08.74193809)
0.00015763 TDB
period 1948.471854642158
5.33
2.4328e-05
6.661e-08
d
yr
n .1847601745656803 2.3069e-09 deg/d
Q 3.47314718666479 2.891e-08 au
  Orbit Determination Parameters
   # obs. used (total)      449  
   data-arc span      8488 days (23.24 yr)  
   first obs. used      1997-05-04  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50658  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:18:36  

Additional Information
 Earth MOID = 1.63418 au 
 Jupiter MOID = 1.91056 au 
 T_jup = 3.205 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO436412  
diameter diameter 5.630 km 0.895 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.046   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91612 (1999 TJ30)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TJ30 = 1997 JY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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